Roll screen structure



Feb. 8, 938. w. E. KEMP ROLL SCREEN STRUCTURE 14934 2 Sheets-Sheet l INVENTOR. Mill/'dm E.' Hemp.

@zpwwaw ATTORNEYS.

Filed June 22,

I Hub BY M' L L.

' Feb. 8, 1938.

w. E. KEMP 2,l07,?55

ROLL SCREEN STRUCTURE Filed June 22, 1934 2 Sheets-Sheet 2 INVENTOI, 6l/Z777 E.' Hemp.

:L .EW

ATTORNEYS.

Patented Feb. 8, 1938 PATENT OFFICE ROLL SCREEN STRUCTURE William E. Kemp, Detroit, Application June 22, 1934, Serial No. 731,808

Y 14 claims.

' This invention relates to roll screens of the type employed in residences and other structures for the purpose of preventing insects from entering through opened windows, the principal object being the provision of a structure of this type that is simple in construction, eicient in operation and economical tomanufacture, install and operate.

Other objects` of the invention include the provision of a roll screen structure including a roller housing that may be detached from operative relation with respect to the window and its frame ina minimum of time and with a minimum of effort; the provision of a roll screen structure including'a pair of securing clips or brackets adapted for permanent securement in connection with the frame of a window and so constructed and arranged Vas to removably receive and retain a roller housing for the'screen structure; the provision of a construction as above described in which the clips or bracketsr Vfor removably rcceiving and retaining the roller housing are provided With eccentric clamping members engageable with the housing to normally maintain it in proper operative relation wtihl respect to the window rframe.

Other objects of the invention include the provision of a roll screen structure for a window including a pair of guides for guiding the screen in its movement to and from the roll therefor and which guiding members are of resilient character and are so constructed and arrangedy that the outer edges thereof,Y are resiliently pressed into contact with the window sash whereby to seal the connection between the screen structure and the. sash and at the same time provide sumcient friction to prevent the torsion of the screen roller spring from causing the window to be lowered Vby such torsion.

#Other objects of the invention are the provision of a roll screen structure in which the eX- tensible edge of the screen is provided with a bar connected at its center only with the window sash whereby equalization of the strains and stresses in the screen occasioned by raising and loweringthe screen with a window will be equalized at all times; the provision of a novel form of releasable catch cooperating between the eX- tensible edge of a roll screen and a Window sash vpermitting equalizing movement of the extensible edge of the screen and permitting the screen to be secured to the window sash so as to be operable simultaneously with the window in its raising and lowering movements; and the provision of a connecting member between the extensiblevedge of a roller screen and a window sash that is optionally releasably engageable with the windowv sash or the upper edge of the housing for the screen roller.

Another object is the provision of a novel means in connection with the frame of a roll screen operable to clamp a window sash against movement in any desired adjusted position and unaffected in its clamping effect by any force appliedto either raise or lower the sash while so clamped.

The above being among the objects of the present invention, the same consists in certain novel features of construction, combinations of parts and steps of operation to be hereinafter described with reference to the accompanying drawings, and-then claimed, having the above and other objects in view.

In the `accompanying drawings which illustrate suitable embodiments of the present invention and in which like numerals refer to like parts throughout the several different views,

Fig. lisa front elevational view of a window frame and window to which a roll screen is shown applied, the window being shown in partly open position.

Fig. 2 is anv enlarged, fragmentary, partially broken, vertical sectional view taken on the line 2 2 of Fig. 1.

Fig. 3 is an enlarged, partially broken, partially sectioned plan view taken on the line 3 3 of Fig. 1.

Fig. 4 is an enlarged, fragmentary, partially broken, partially sectioned front elevational view of the roller screen construction showing certain of the parts in greater detail.

Fig. 5 is afragmentary, partially broken, vertical, sectional view taken on the line 5 5 of Fig. 4.

Fig. 6 is an enlarged sectional view taken transversely through theequalizer bar or edge member for the extensible edge of the screen, taken on the line 6 6 of Fig. 4.

Fig. 7 is an enlarged, fragmentary, front elevational View of the means provided for clamping the window against movement.

Fig. 8 is a vertical, sectional View taken on the line 8 8 of Fig. 7.

Fig. 9 is a fragmentary, horizontal, sectional view taken on the line 9 9 of Fig. 7.

Fig. 10 (sheet 1) is an end View of the spring roller shown in the preceding figure and taken on the line |0 |0 of Fig. 3.

Fig. 11 is a fragmentary plan view of the end of the roller shown in Fig. l0,

Referring to the drawings, a window frame is indicated at 28 which encompasses the windows indicated generally at 2| and 22 respectively each of which includes a sash 24 and a glass 26. The frame 28 includes the usual sill 21. The window frame and windows shown are of conventional construction and the windows are vertically slidable in the frame in accordance with conventional practice. A roll screen formed in accordance with the present invention is shown as including generally a roller housing 28 secured to the window sill 21 inside of the window 2 I, guide members 38, one iixed to each side of the window opening in the frame 28, a exible screen 32 removably secured at one end to the lower edge of the inner window 2| and adapted to be rolled upon or unrolled from a suitable roller within the housing 28 which will hereinafter be more fully described.

The housing 28 includes a main body portion of generally U-shaped section formed from sheet metal and positioned with its open face toward the outside of the window as best indicated in Fig. 2. As indicated in this figure the upper outer marginal edge of the housing 28 is reversely bent as at 34 toprovide a round, smooth edge for contact with the screen 32 during certain positions of the mechanism and to provide a seal between this edge of the housing 28 and the screen 32. As indicated best in Fig. 3, the housing 28 is provided with end walls 36 the central portions of which are inwardly depressed as at 38 and are centrally apertured for non-rotatable reception of the flattened end portion of the roller shaft 40 which will hereinafter be more fully described.

The housing 28 and the parts carried thereby are removably secured in position relative to the window frame 20 in the following manner. A clip or bracket member indicated generally at 48 is secured to the window sill 21 at either side of the window opening. As indicated in Fig. 4, each bracket 48 comprises a flat horizontal portion 50 which seats against the window sill and is. secured thereto as by screws 52 and a vertically extending portion 54 which lies in parallelism and slightly spaced relation with the corresponding side face of the window frame 28. As indicated in Fig. 2, the forward edge of the bottom portion 58 of each bracket 48 is upwardly and then reversely bent upon itself as at 56 to form a hook in which the corresponding portion of the forward edge of the lower wall of the housing 28 is removably received. A similar rearwardly facing hook 51 is also formed at the outer edge of the side member 54 for hook-like engagement with the corresponding end wall 36 of the housing 28. The laterally outer end portion of the hook 56 is cut away so as to prevent interference of the end walls 36 o-f the housing 28.

As best indicated in Fig. 5, an arm 58 is pivotally secured to the laterally outer face of each side member 54 of each bracket 48 by means of a rivet such as 50 or other suitable means. The axis of the rivet 68 is located outwardly with respect to the window from the axis of the spring shaft 4|) previously mentioned, it being necessary in any case that it be eccentric to the curvature of the rear face of the housing 28. The free end portion of each lever or arm 58 is formed to provide an axially inwardly projecting contact face 62 and a thumb plate 64, the relation of the parts being such, as best indicated in Fig. 5, that when the arm or lever 58 is swung upwardly about its pivotal axis the surface 62 is carried upwardly and out of contact with the housing 28 whereas when it is swung downwardly the surface 62 engages the rear face of the housing 28 and acts to press the housing outwardly into snug engagement with the bottom of the hooks 56 and 51. The piece 64 permits the arm 58 to be rmly pressed downwardly to effect the desired clamping engagement therewith. By swinging the arm 58 upwardly to the position indicated in dotted lines: in Fig. 5, the housing 28 and all parts carried thereby may be easily and quickly rearwardly removed from engagement with the brackets 48 and association with the window frame 20 and conversely the housing 28 may be replaced in the position indicated in Fig. and, upon pressing the arms 58 downwardly, may be quickly and firmly clamped in such position. By accurately locating the brackets 48 relative to the window sill 21 in the first instance, the. housing 28 may be always quickly and accurately relocated with respect to the windows and window frames at any desired time.

Within the housing 28 is mounted the roller indicated .generally at 66 to which the lower end of the screen 32 is secured and upon which the screen 32 is adapted to be rolled and/or unrolled during movement of the window 2|. This roller and the method of fastening the screen thereto forms no part of the present invention but constitutes the subject matter of my col-pending application for Letters Patent of the United States for improvements in Roller screen construction, Serial No. 73,824, filed April 11, 1936. The roller 66 comprises an outer cylindrical sheet metal body member 68 sleeved upon end members 10 which, as indicated in Figs. 3 and 4, are identical with each other and are xed against rotation with respect to the body 68 of the roller. -The members: 16 are of generally cup-shaped formation and are each centrally provided with an inwardly extending sleeve portion 12 forming a bearing for the corresponding end portion of the roller 66. As indicated -best in Fig. 3, between its end portions which are journaled in the sleeves 12, the shaft 40 is of square section and. between its ends non-rotatably receives thereon a cylindrical member 14 provided with a peripheral flange 16. A coiled torsion spring 18 surrounds the shaft 48 within the roller 66 and the' inner end of the spring is projected through an opening in the flange 16 and is maintained against rotation with respect thereto. A pin 88, as indicated in Fig. 3i, is preferably projected through the shaft 48 for abutment with the member 14 to prevent it from shifting axially of the shaft 40 beyond a desired position under the tension of the spring 18.

As indicated in Fig. 4, the opposite end of the spring 18 is projected through a suitable opening in the corresponding end member 18 and is thereby locked against relationlrotation with respect to the roller 66. It may be noted, as indicated in Fig. 4, that the outer end of the spring 18 is reduced in diameter so as to be relatively closely received upon the corresponding sleeve 12, thereby centrally guiding it with respect to the shaft 40 and, as indicated in Fig. 3, the inner end of the spring 18 is similarly reduced in diameter and is relatively closely received upon the member 14 for the same purpose.

It will be understood, of course, that the spring 18 is placed under an initial tension so that in operation it will insure the screen 32 being completely rolled upon the roller 66 when the window 2| is lowered and, as is obvious, when the 'spondingend of the body member 68 abuts.

window 2| is raised the roller 66 will be rotated relative vto the shaft 40 and will place the spring 18 under a torsional stress tending' to resist further unrolling of the screen 32.

Referring particularly to Fig. 11, it will be noted that the body |58v of the roll is split along a line.82 parallel to the axis kof the roll. The body 68 is preferably formed in the same manner that butt welded tubing is formed, that is, a suitable length of a strip of metal rolled up into a` tube so as to bring opposite longitudinally extending edges into abutting relation with each other, such edges preferably abutting each other with a fair amount of pressure, in the present case preferably between 3 and 6 pounds to the inch in length. f

In securing the screen 32 to the body 68 of the roll 66, the abutting edges along the line 82v are caused to be expanded or separated, the edge of the screen 32 is'inserted between the spaced edges, and then the edges are allowed to again contract toward their normal abutting position and in which positions they will then firmly clamp the edge of the screen 32 between them. Preferably, a smallamount of the edge is allowed to project into' the interior of the body 68 and is bent over therein to further prevent possibility of pulling the screen 32 out of engagement with the body 68. By this means a quick and exceedingly eiiicient means is provided for securing the screen 32 to the roller.

Referring to Figs. 10 and 11, it will be noted that the outer end of the end member 'l0 for the roller 68 is provided with a radially outwardly projecting flange |20, against which the corre- At approximately diametrically opposite points flange |20 is cut out and in Vthese cut-out portions the lugs 86 and 88 formed to project axially beyond the main body portion 68 on either side ofthe line of split 82 thereof and at a point approximately diametrically opposite thereto are received, andthe outer ends of the lugs are peened over the axially outer face of the flange |20 as at |22 in Fig. 11 in order to prevent axial displacement between the end member 10 and the body 68 of the roller 66. Likewise, this engagement of the lugs and the iiange |20 locks the end member 10 to'the body 68 for equal rotation therewith. As an'added feature, it will be noted that the lugs 88 are preferably tapered ontheir inner face and the corresponding notch or recess in the ange |20 is preferably so proportioned that, as indicated in Fig. l1, when the corresponding end member 'l0 is forced into the end of the body 68 the sides of the notch will engage the tapered sides of the lugs 88 and will tend to further contract the abutting edges of the body 68 and thereby more firmly clamp the screen 32 therebetween. For this reason one of the notches is preferably held to reasonably close limits and the notches are offset from a true diameter as shown, or otherwise formed so that they will receive the lugs 86-88 in one position only.

The guides 30, as best illustrated in Fig. 3, comg prise a pair of angle members |26 and |28, re-

spectively, the legs of which extend in a plane parallel to the window 26 and the bases of which contact with each other and are secured to the side wall of thewindow openingrin the frame 20 by screws such as |30. While these guides 30 may be formed of two separate parts, for the sake of economy, appearance and general eiliciency, they are preferably formed from a single strip bent'to the shape shown. The legs of the angle members |26 and |28 extend in parallelism to the plane of the window 26 and are spaced from each other by a distance amply suicient to receive the edge of the screen 32 therebetween, and they project inwardly from the side of the window opening a suflicient distance to provide a suitable amount of overlap with respect to the corresponding edge of .the screen 32 over reasonable variations in the width of windows from a standard width. As particularly brought out in Fig. 3, in initially forming the guides 30 the leg of the outer member |26 is preferably formed so that its free end tends to project outwardly as at |30 beyond a true perpendicular relationship with respect tothe foot of the angle, and in securing the guides 30 to a window frame they are pressed outwardly against the sash of the lower window so as to cause the leg of the outer angle 26 to be bent inwardly into or at least toward the plane of the window as indicated in full lines in Fig. 3. The material from which the guides 30 are made is preferably relatively light and spring-like so that, yWhile the pressure against the window sash caused by bending inwardly the leg ofthe outer angle |26 will somewhat increase the frictional resistance to raising and lowering the window, it will not unnecessarily restrict the ease of raising and lowering the window 26. In any event, in securing the guides 30 in place the screws |30 may be so located as to obtain any desired amount of contact between the leg of the angle 26 and the window sash and/or degree of friction between them. By causing the guides 30 to exert a desired amount of frictional resistance to raising and lowering of the lower window 26, the possibility of the spring 18 within the roller 56 exerting a sufficient amount of pull on the window to inadvertently close it may be definitely eliminated. Additionally, because of the spring-like contact between the guides and the window sash a weatherstrip effect is obtained preventing circulation of air between the window sash and the window frame along the length of the guides in the Winter time.

The guides 30, as indicated best in Fig. l, extend from the window sill to a suflicient height to properly guide the screen 32 when the inner window 26 is in fully raised position. The lower ends of the guides 30 extend all the way down to the window sill21 and, in order to permit the housing 28 to be positioned outwardly of the window opening as close to the sash of the inner window 2| as possible, the leg of the inner angle |28 is severed from the foot portion thereof from the bottom end thereof to a point slightly above the upper face of the housing 28, and this severed strip is rolled up into a coil |34, best indicated in Fig. 2, and which coil is adapted to resiliently press against the upper curled edge 34 of the housing 28. This forms an effective seal between the angle |28 and the housing 28.

In order to secure the screen 32 to the inner window 2| so that the screen vwill be raised and lowered with the Window, the free end of the screen 32 is provided with a cross bar |38 secured thereto and the end portions of which are received by and guided in the guides 30 along with the edges of the screen 32. Preferably, the ends of the cross bar |38 are extended beyond the corresponding edges of the screen 32, as illustrated best in Fig. 4, so as to prevent such edges of the screen from coming into direct contact with the bottom of the channels formed within the guides 30. The length of the cross bar |38, however, is preferably such as to allow for usual tolerances in the standard width of windows.

As also best illustrated in Figs. 2 and 4, a handle member |40 is secured to the lower cross member of the sash 24 for the window 2| and its upper edge is first outwardly turned as at |4| and then inwardly turned as at |42 to provide a convenient grip for the fingers of the operator. The lower central portion of the handle member |40 is partially cut away toform an opening |44 and a portion of the metal thus cut away is bent upwardly and inwardly to provide a hook |46 positioned below and in spaced relation with respect to the hook |4|-|42. A plate member |48 is centrally secured tothe outer face of the cross member |38 as by means of rivets |50 and the member |48 is of a width less than the width of the opening |44 in the handle |40 so as to be receivable therein. The member |48 is provided with an upwardly projecting portion |52 the upper marginal edge of which is bent as at |54 into the same general contour as the hook |4||42 so as to enable it to be grasped by the fingers oi an operator. The metal of the portion |52 is severed on three sides and the enclosed metal bent out to form an opening |56, the metal thus bent out being directed forwardly and downwardly about its lower edge to form a supplementary hook |58. The opening |56 is of greater width than the hook |46 on the main handle |40 so that the hook |46 may be passed through the opening |56 to engage the undersurface of the hook |54 and thereby secure the upper edge of the screen against downward displacement with respect to the sash of the window 2|.

As will be apparent, an operator may grasp the portion |54 and, pulling upwardly and outwardly, cause the upper edge of the cross bar |38 to pivot outwardly relative to its lower edge, releasing the hooks |46 and |54 and thus permit the screen to become lowered independently of movement of the window, in which case when the screen is in fully lowered position the hook |58 will engage the rolled upper edge 34 of the housing 28 to limit further withdrawal of the screen 32 into the housing 28. Preferably, the rolled edge 34 is centrally notched as at |60 and best shown in Fig. 4 so that the hook 58 will become located therein when the screen is lowered and maintain the free edge in central position with respect to the housing 28. It may be noted that the relation of the hooks |42 and |54 is preferably such that in releasing them they engage each other and thus require the pivoting movement about the lower edge of the bar |38 previously described, and that further, sufficient pressure will have to be applied to the hook |54 to cause the cross bar |38 to spring outwardly at its center to release the hook |54 from the hook |46, thereby making it impossible for the screen to be inadvertently disengaged from the window or impossible for a young child to effect such disengagement. Obviously, where this effect is desired the bar member |38 will be constructed of sufiiciently thin and resilient material to permit the effect to be attained. f

It is to be particularly noted that this method of connecting the free end of the screen 32 to the window includes a connection at the center only of the window and the connection is such that the bar 38 may pivot in a plane parallel to the plane of the window 2| about its point of connection with the window. By means of this construction the bar |38 acts in effect as an equalizing bar 'for the screen 32 and it may pivot in either direction from its normal position to equalize the strain between opposite sides of the screen 32 due either to hard spots in the screen, through lateral shifting of the window or from any other cause, and it has been definitely shown that, because of this equalizing construction, the life of the screen 32 is substantially doubled over constructions in which the bar |38 may not thus pivot to equalize such strain.

The construction also permits equalizing movement of thebar |38 when the screen is wound on the roller so as to take care of inequality in the diameter of the screen as it rolls up on the roller. By this construction the stress between all of the vertical strands of the screen is equalized to a great extent, thus preventing localized stresses in individual strands which might otherwise reach a sufficient value to break such strand and thereby cause early and premature disintegration of the 73,823, led April l1, 1936. `As best indicated in Fig. 6, the cross bar |38 is shown as being formed from a single strip of metal reversely bent upon itself along its longitudinal centerline to bring opposite sides into spaced parallel relation to form a screen receiving channel. The free edge of the screen 32 is projected between the opposed legs of the member |38 and is clamped between them.

A strip of yieldable material |62 is folded over the opposed faces of the free marginal edge of the screen 32 before it is inserted between the opposite legs of the member |38. This material may be fabric, rubber or any other suitable material and of a thickness such that, regardless of how forcefully the opposite legs of the bar |38 are pressed toward each other after insertion of the screen 32 and strip |62, the screen will become embedded in the strip |62 and will be maintained against substantial actual contact with the inner walls of the bar |38. This effectively Y prevents the various strands of the screen from shearing one another due to the clamping action of the member |38.

In order to enhance the holding effect of the bar member |38 on the screen |32, the strip |62 is preferably made from rubberized fabric having a relatively high frictional coecient and additionally the inner surfaces of the bar member |38 are preferably lightly knurled or otherwise roughened before it is bent into channel shape in order to further increase the holding tendency of the same upon the strip |62.

Another feature of the present invention which may be found desirable to use consistsof a means in connection with each of the guide members 30 for locking the window 2| against unauthorized movement. This means, which is best shown in Figs. '7, 8 and 9, consists of an eccentric or cam |10 provided with an operating arm |12 and pivotally secured to the side wall of each guide 30 as by means of a screw |13 extending through such side wall of the guide 30 and into the window frame 20. The leg of the inner angle member 28 of each guide 30 is out away as at |14 so as to permit the eccentric or cam |10 to project through and beyond. the member |28 and into contact with the member |26. When the handle |12 is in its upper position, as indicated in dotted lines in aromas.

nigga, the4 cam of .eccentric ii is withdrawn from contact with the leg of thek outer member |26 .and vtherefore permits free vertical movement of thesash for the window 2|. `When, however,l

the handle |12 is moveddownwardly into the Positlonindicated inv fullllnes Vin Fig. 18,fthe caml or eccentric |10 is forced outwardly against thecooperating portionv of the angle member: |26 of the guide 30 and distorts'such'portionoutwardly against thefsash 24 for the window'2l and causes y such' sash to be `forced outwardly against its cof operating `guide inthe window frame '20, thusclamping it against unauthorizeduvertical movementz- "Itvwillbe apparentthat inasmuch as thef camvr |10 acts throughthe legof thechannel merrrl ber`|26 of the guide 30, it acts'through a surface that is always stationary regardless of the position Vo'fthe window 21 and; accordingly; any atin positionr by this mechanismwillhave no eieet whatever on either-tending to tighten or to loosen this clamping mechanism.

Each cam-or leccentric 10 and its handle r12 is preferably formed as part of an assembly in- `cludingalwasher |16,"best illustrated in Figj9l which provided rwithr ya boss |18 projected through a. corresponding vopening in the cam`|10 and peened-Lover so'as to'forr'n apivotal support for the saineeand to effecti-apermanent assemblytherewith; One edge of the 'washer is'preferably inwardly bent as at and so located as'to pro+ ject oyer the inneredgeof 1the guide 30 and is v'preferably of suchlength4 as` to' 'be slightly .ern-V bedded inf the 4material `'of thev window frarne20,

thusl aiding y in* permanently' locking -itl inposiy tioni'andhelping it -to take the thrust of thecam-V v1|| iny placing" the'window 2| v`in locked position. v

lFormal changes may be made in the speclc Y, embodiment of Athe invention described without departing fromv the'spirit orI substance of the broad invention', thescopeoi which is commensurate'fwith'theappended claims. t f

il. For` use inr connection framegahousing' mounted r'on' 'said Windowxframe rollerg'mounted" in said Ihousing, a 'screen' secured to ysaid roller, spring means constantlytendingtor 'L'rollsaid screen .uponzsaid roller, a rfiexible bar "memberfsecured to the free edge of said screen, and-:guide members for the ends of said bar, in

4 combination, a hook member secured to said sash,

a handle member secured to said'barvmember Y and provided with a part for interengagement with said hook member, said handle member and l said hook 4member being so constructed and arranged as to causesaid bar member to be urged directlyy against said sash under the influence of the tension in said Y,screenl caused by said spring means, the whole being so constructed and arranged as to necessitate springing of said bar Y Vmember between its ends out of its normal plane Vin order to operatively engage or disengage said and afrollr screen housingdetachably secured to said brackets, said housing and brackets being so constructed and arrangedthat said housing may Ybe removed without disconnecting said brackets from said sill. s

n 3. `In' a roll screen structure for windows inwith a windowframe: Ahaving a-iwindow sash slidably mounted in-fsaid' l cluding a. window frame having a sill and a window vertically slidable in said frame, bracket means secured tothe opposite ends of said sill, abutments on said bracket means, a roll screen housing movable into engagement with said abutmnt means, and clamping means associated with each of said bracket means engageable with said housing for locking it in position against said abutment means.

4. In a roll screen structure for windows including a window frame having an opening therein and a window slidable in said opening,'a bracket secured to said frame at opposite sides of said window, a hook formed on each of said brackets for reception of. an edge of vsaid housing, and means associated with each of said brackets and relea'sably engageable with said housing for releasablyl locking .said housing to said brackets.

5.-Ina :roll screen structurer for windows and thelikeyin' combination, a housing adapted for securement to the sill of a window frame, a guide member adapted to be secured to the window frame on either side of the opening therein and in cooperative relation with respect to said housing, each of saidlguide members comprising a member providing a channel therein for receiving thenedge of a roll screen, the inner wall of said channel being formed into a coil Vand arrangedfin abutting relation with respect to said housing. i

' .6. A guide for the edge lof a roll screen comprising a member including a pair of angle portions, the bases of which are secured together and the legs of which are arranged in spaced relation to form a screen receivingchannel between them, one of said angle portions being formed 'ofy thin, flexible, resilient metal having a normallnclination outwardly away from a plane perpendicular to the base thereofy whereby, in securing said base to a window frame, the outer leg of said'portion maybe caused to resiliently press against a sash slidable in said frame.

'7. For, use in connection with a window frame having anfopening therein, a wndow'sash slidable in said frame, in combination, a screen guide member'adapted to be secured to a side of rsaid window opening, said guide member comprising a pair ofV `angle members the bases of which are arrangedqin contact with each other and are adapted to besecured in contact with said frame andthe legs ofr which are arranged in generally spaced relation to form a channel therebetween, the inner of said legs having a cut-away portion, a cam member pivotally mounted upon said bases and projecting through said cut-.away portion and being engageable with the outer of said leg members, the outer of said leg members being flexible and adapted to be arranged in substantial contact with said window sash and said cam member being operable to distort said outer leg member outwardly to clamp said sash to said frame.'

. 8. In combination, a window frame having a sill, a window vertically slidable in said frame, a pair of brackets secured to said sill at opposite ends thereof, a guide projecting upwardly from said sill at each side of said frame and fixed to the corresponding side of said frame independently of the corresponding of said brackets, a housing engageable with said brackets, means cooperable between said brackets and said housing for releasably securing said housing to said sill'so constructed and' arranged that said housing may be removed from said brackets without removing said brackets vfrom said frame, a roller in said housing, a screen wound on said roller, and means for interconnecting'the free edge of said screen with said window.

9. For use in a roll screen structure for windows including a window frame having an opening therein and a window sash slidable in said opening; a bracket secured: to said frame at each of the opposite sides of said opening, means fixed t each of said brackets forming a stop surface, a roll screen housing receivable betweeny said brackets and movable to a position in engagement with said stop surfaces, and an arm pivoted to'v each of said brackets and having a surface engageable with said housing to releasably lock said housing 'in engagement with said stop surfaces. i v

10. For use in connection with a window frame having a window opening therein, a sash in said opening vertically slidable relative to said frame, a roll screen extending over saidwindow; Vmeans for guiding an edge of said screen during movement comprising a guideadapted to be secured to said frame at the side of said window opening, said guide comprising a member Ahaving a channel opening therein for reception of an edge of said screen, the outer wall of said channel being resilient and adapted to resiliently press against the sash of said Window.

11. In a roll screen structure forwindows including a window frame having side members and a sill, and a window sashvertically slidable in said frame, in combinatiombracket means secured to said frame at the 4opposite ends of said sill, a roll screen housing detachably secured to said brackets, la guide member secured to each of said opposite side members and extending vertically upwardly from 'said housing, each of said guide members being of angular section, one leg of which is of channel section whereby to adapt it to receive the margin of a 'screen therein, a

coil at the lower end of each of said guide members integral Witha wall of said channel and lying in abutting relation with respect to said housing, the outer marginal wall ofthe channel of each said guide member resilientlypressing against said Window Sash to provide a seal lbetween said frame and window.

12. In a roll screen structure for Windows and the like, in combination, a housing adapted for securement to the sill of a window frame, a guide member adapted to be secured to the window frame on each side of the opening therein and in cooperative relation with respect to saidhousing, each of said guide members comprising a member providing a channel therein for receiving the edge of a roll screen, and a portion secured to the inner wall of said channel yieldable in the direction of .length of said guide member and adapted to yieldably engage said housing.

13. In a roll screen structure for windows including a window frame having a sill and a Window sash vertically slidable in said frame, a roll screen, a housing of fixed dimensions therefor, the free edge of said screen being securable to the lower edge of said sash, and means for mounting said housing in operative position with respect to said sash and centrally of the window opening in said frame regardless of Variations in the width of said window opening in excess of the length of said housing comprising a bracket for each end of said housing, each of said brackets being secured to said sill independently of the side members of said frame whereby to permit a choice of location thereof longitudinally of said sill' to center said housing thereon, and means releasably co-acting between said brackets and housing for releasably securing said housing relative to said sill.l

14. In a roll screen structure for windows including a window frame having a sill and a window sash vertically slidable in said frame, a roll screen, a housing of fixed dimensions therefor, the free edge of said screen being securable to the lower edgelof said sash, and means for mounting said housing in operative position with` respect to said sash and centrally of the window opening in said frame regardless of variations in the width of said Window opening in excess of the length of said housing comprising a bracket for each end of said housing, each of said brackets being secured to said sill independently of the side members of said frame whereby to permit a choice of location thereof longitudinally of said sill tocenter said housing thereon, means releasably coacting between said brackets and housing for releasably securing said housing relative to vsaid sill, and guide means for each edge of said screen, each of said guide means being secured to its corresponding frame side member independently of said sill.

WILLIAM E. KEMP. 

